Shuttle tension.



F. RENZO.

SHUTTLE TENSION.

APPLICATION FILED SEPT-22. 1916.

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Patented June 5, 1917.

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A, ATTORNEY.

UNTTFD STATES PATENT T @FFTWF.

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SHUTTLE TENSION.

resents.

Application filed September 22, 1916.

To cZZ whom it may can 969%:

Be it known that I, FRANoEsoo Rnnzo, a subject of the King of Italy, residing at Paterson, in the county of Passaic and State of New Jersey, have invented certain new and useful Improvements in Shuttle Tensions, of which the following is a specificatlon.

This invention relates to that class of tension means for shuttles in which a spring actuated lever member having a series of eyelets coact with a series of stationary eyelets to exert the required tension, and its object is to provide a tension device which shall he inexpensive to manufacture and simple in construction and in which the eyelets are mounted in a novel way to permit their being readily replaced, when damaged or worn, or adjusted to different distances from each other.

In the accompanying drawing,

Figure 1 is a side elevation partly in sec tion, of a shuttle equipped with my improved tension device;

Fig. 2 shows the blank from which the body member of the device is made, after the first operation has been performed thereon;

Fig. 3 is a plan view of said bodymember;

Fig. 4; are elevations of one of the eyelet members;

Fig. 5 is a side elevation, partly in section, and Figs. 6 and 7 end elevations of the device; and, p

Figs. 8 and 9 are a side elevation, partly in section, and an end elevation of amodified form of the device.

Referring, first, to Figs. 1 to 7, to form the body member of the device I take a suitable strip a of sheet metal and bend back its longitudinal edges so that fora little more than half the length of the strip said edges will form opposite grooves 6 (Fig. 7) and for the remainder of the length of the strip said edges will form flat folds 0.

Thereupon, upon a transverse axis parallel with the material of the strip a, I bend the end portion of the strip which has its edges 0 c flat-folded into an underlying loop tZ, leaving the extremity e of said endportion projecting downwardly. The loop (Z forms the bearing portion of the device, being adapted to receive the fulcrum pin f (Fig. 1) while the extremity c aflords a projection to which to attach the usual rubber Specification of Letters Patent.

Patented June 5, 1917. Serial No. 121,603.

band or other spring 9 for holding the device normally retracted; for the, attaching of spring 9 the extremity 6 may be provided with the aperture 7.

Each eyelet member consists of an eye a and a block-shaped base 7' formed dovetailed in cross-section so as to fit the channel afforded by the grooves Z) of the body member- The eyelet members are arranged in a row, preferably abutting each other in said channel, and may be removably secured thereinby shellac or'other cement k, or otherwise. The eyes 2' each afford a straight thread contact surface '11 at the top, allowing the thread to shift, thus to prevent wearing a nick in the eye.

Referring to Figs. 8 and 9, the body member Z is a suitable length of wire, preferably square in cross-section, being straight for the major portion thereof but having one end formed into a loop m and the extremity a thereof projecting downwardly. The loop m forms a bearing portion to receive the fulcrum pin f and the extremity n is adapted for the attachment thereto of the spring 9.

Each eyelet member in this case includes an eye 0 and a basep, the latter being formed with a cross-sectionally rectangular bore 9, so as to permit the eyelet members being threaded onto the straight portion of the body member Z, as shown in Fig. 8. Shellac or other cement 1" may be used to hold the eyelet members removably on the bodymembers Z.

In either construction, the eyelet members are adapted to cooperate as thread guides with the fixed thread guides s of the shuttle, as shown in Fig.1, the weft thread or filling extending in-zig zag fashion with respect to the two sets ofguides in the usual way.

The eyelets may in either case be made of porcelain or other vitreous material or the like. Their bases being block-shaped insure the eyelets being held rigidly and in a manner to withstand handling without distortion or dislocation.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent is 1. A tension device for a shuttle tension means of the class described including an elongated body member and a series of eyelet members each including an eyelet proper and a block-shaped base, the several bases being. removably secured in a row on said body member.

2. A tension device for a shuttle tension means of the class described including an elongated body member formed of an elongated piece of sheet material having its longitudinal edges bent back and forming opposite grooves for a part of the length of the piece and a series of eyelet members arranged on the body member and engaged in said grooves and thereby held to the body member.

3. A tension device for a shuttle tension means of the class described including an elongated body member formed of an elongated piece of sheet material having its longitudinal edges bent back and forming opposite grooves for a part of the length of the piece and a series of eyelet members arranged on the body member and engaged in said grooves and thereby held to the body member, one end of said piece being bent into a loop-including bearing-forming projection.

In testimony whereof I aflix my signature.

FRANCESCO RENZO.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

